Portable vaporizer



FIG. 1 is a front right perspective view of a portable vaporizer;

FIG. 2 is a right side elevational view thereof, the left side being amirror image of that shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a portable vaporizer, as shown and described.